Allen Fair <dba(at)girders(dot)org> writes:
> Hi! I have a table with a character column (called match_regex)
> containing a POSIX regular expression, hoping to have Postgres use it
> while evaluating the "where" predicate. The following error occurs:
> SELECT *
> from patterns
> where 'blah blah blah' ~ match_regex;
> ERROR: invalid regular expression: quantifier operand invalid
This means there's at least one value in the column that's not a legal
regex (* at the front is one possible cause, IIRC).
regards, tom lane